About: http://webisa.webdatacommons.org/50502153

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	the bond represented by is a single bond or a double bond, and R1???R5, X, and Y have any of the meanings defined in the specification and their pharmaceutically acceptable salts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca